Sometimes i just heat some olive oil up in a baking tray
Chop up the potatoes into relatively small sizes, throw them in and shower with salt & pepper, rosemary, oregano and thyme and roast till nice and golden and crispy - yum!

High heat on the hob, big pan. They end up like a cross between roasties and chips, but much quicker than roasties and probably slightly healthier than chips. And you can parboil a massive load of potatoes ready to fry at the drop of a hat.

Or - parboil, cut into chip shapes and roast like that on a cooking sheet. Oven chips!

You can do roast potatoes with out parboiling, but you have to cut them up much smaller so they cook through, and I find it harder to hit the edible sweet spot between hot but raw, and charred through.